319550

Appears in sequences

• Smaller of an amicable pair: (a,b) such that sigma(a) = sigma(b) = a+b, a < b.at n=24A002025
• Conjectured list of smallest terms of k-sociable cycles of order r.at n=34A183016
• Abundant numbers whose aliquot sequence is abundant, deficient, abundant, ..., etc.at n=33A234969
• Amicable pairs of even numbers.at n=38A262622
• Even amicable numbers.at n=36A262624
• Amicable numbers (m, n) with record low values of m/n.at n=4A287011
• Amicable pairs with the property that the number of divisors of the smaller member is greater than the number of divisors of the larger member.at n=28A328063
• Lesser of recursive amicable numbers pair: numbers m < k such that m = s(k) and k = s(m), where s(k) = A333926(k) - k is the sum of proper recursive divisors of k.at n=25A333929